python - Script stops after a couple of hours
问题描述
I'm using requests and getting data from API in loop like every 11 seconds and display it on LCD. It works perfectly but after couple hours I get json.decoder.jsondecodeerror expecting value line 1 column 1 (char 0) error and I have to rerun the program manually. I couldn't figure out how to fix.
This is the code. api link shows where the buses is in json format and refreshes every 11seconds. Im running it on raspbian os (raspberry pi 3) with 1602 lcd display.
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import time
import datetime
import requests
import json
import I2C_LCD_driver
# from time import *
mylcd = I2C_LCD_driver.lcd()
turkcec = [
[0b01110,
0b10001,
0b10000,
0b10000,
0b10000,
0b10001,
0b01110,
0b00100],
]
def get_data():
url = "***"
response = requests.get(url)
data = response.text
parsed = json.loads(data)
list = []
for i in range(len(parsed["busList"])):
if parsed["busList"][i]["disabledPerson"] == 0:
list.append(
str(parsed["busList"][i]["displayRouteCode"]) + " " + parsed["busList"][i]["stopDiff"] + "drk " +
parsed["busList"][i]["timeDiff"] + "dk " + "E")
else:
list.append(
str(parsed["busList"][i]["displayRouteCode"]) + " " + parsed["busList"][i]["stopDiff"] + "drk " +
parsed["busList"][i]["timeDiff"] + "dk")
return list
data = get_data()
while True:
starttime = time.time()
while len(data) > 0:
#time.sleep(5)
for x in range(0, len(data), 2):
mylcd.lcd_clear()
print(data[x])
if data[x][0] == "Ç":
mylcd.lcd_load_custom_chars(turkcec)
mylcd.lcd_write(0x80)
mylcd.lcd_write_char(0)
mylcd.lcd_display_string(data[x][1:], 1, 1)
else:
mylcd.lcd_display_string(data[x], 1)
if x == len(data) - 1:
time.sleep(11)
break
if data[x + 1][0] == "Ç":
mylcd.lcd_load_custom_chars(turkcec)
mylcd.lcd_write(0xc0)
mylcd.lcd_write_char(0)
mylcd.lcd_display_string(data[x + 1][1:], 2, 1)
else:
mylcd.lcd_display_string(data[x + 1], 2)
print(data[x + 1])
time.sleep(11)
if (
time.time() - starttime) >= 11.0:
starttime = time.time()
data = get_data()
print("--------")
else:
mylcd.lcd_clear()
while True:
data = get_data()
mylcd.lcd_display_string(time.strftime("%d/%m/%Y"), 1, 3)
mylcd.lcd_display_string(time.strftime("%H:%M:%S"), 2, 4)
time.sleep(1)
if len(data) > 0:
break
continue
This is the result from api link. I need values from "busList".
{
"result": {
"cmd": "/api/bus/closest",
"code": 0,
"message": "OK",
"dateTime": "20200215145439",
"debugTimeDiff": "",
"authType": ""
},
"stopInfo": {
"busStopid": "18",
"busStopName": "İSKELE",
"lat": "40.1502179",
"lng": "26.4031012"
},
"busList": [
{
"busId": "17059",
"plate": "17-H-0059",
"disabledPerson": "0",
"displayRouteCode": "Ç3",
"displayName": "Ç-3",
"headSign": "Ç-3",
"routeCode": "70003",
"shapeId": "700030",
"stopDiff": "2",
"timeDiff": "1",
"lat": "40.14762",
"lng": "26.406181"
},
{
"busId": "17070",
"plate": "17-H-0070",
"disabledPerson": "0",
"displayRouteCode": "Ç8",
"displayName": "Ç-8",
"headSign": "Ç-8",
"routeCode": "70008",
"shapeId": "700080",
"stopDiff": "2",
"timeDiff": "5",
"lat": "40.14622",
"lng": "26.40825"
},
{
"busId": "17076",
"plate": "17-H-0076",
"disabledPerson": "0",
"displayRouteCode": "Ç1",
"displayName": "Ç-1",
"headSign": "Ç-1",
"routeCode": "70001",
"shapeId": "700010",
"stopDiff": "3",
"timeDiff": "9",
"lat": "40.14187",
"lng": "26.40788"
},
{
"busId": "17034",
"plate": "17-H-0034",
"disabledPerson": "0",
"displayRouteCode": "Ç7",
"displayName": "Ç-7",
"headSign": "Ç-7",
"routeCode": "70007",
"shapeId": "700070",
"stopDiff": "9",
"timeDiff": "14",
"lat": "40.132263",
"lng": "26.409042"
},
{
"busId": "17029",
"plate": "17-H-0029",
"disabledPerson": "0",
"displayRouteCode": "Ç3",
"displayName": "Ç-3",
"headSign": "Ç-3",
"routeCode": "70003",
"shapeId": "700030",
"stopDiff": "5",
"timeDiff": "14",
"lat": "40.145737",
"lng": "26.4206"
},
{
"busId": "17018",
"plate": "17-H-0018",
"disabledPerson": "0",
"displayRouteCode": "ÇT3",
"displayName": "ÇT3",
"headSign": "ÇT3",
"routeCode": "70016",
"shapeId": "700160",
"stopDiff": "5",
"timeDiff": "15",
"lat": "40.14575",
"lng": "26.420376"
},
{
"busId": "17042",
"plate": "17-H-0042",
"disabledPerson": "0",
"displayRouteCode": "11K",
"displayName": "11K",
"headSign": "11K",
"routeCode": "70012",
"shapeId": "700120",
"stopDiff": "9",
"timeDiff": "19",
"lat": "40.12353",
"lng": "26.410328"
}
],
"routeList": [
{
"routeCode": "70004",
"displayRouteCode": "Ç4",
"name": "Ç-4",
"headSign": "KOCATEPE CAMİ",
"stopArrivalTime": ""
},
{
"routeCode": "70005",
"displayRouteCode": "Ç5",
"name": "Ç-5",
"headSign": "SSK Durağı",
"stopArrivalTime": ""
},
{
"routeCode": "70011",
"displayRouteCode": "11G",
"name": "11G",
"headSign": "SSK Durağı",
"stopArrivalTime": ""
},
{
"routeCode": "71016",
"displayRouteCode": "960",
"name": "960",
"headSign": "Eski Hastane",
"stopArrivalTime": ""
},
{
"routeCode": "72011",
"displayRouteCode": "11G-T",
"name": "11G",
"headSign": "NUSRET YURDU",
"stopArrivalTime": ""
}
]
}
This is the error.
Traceback (most recent call last):
File "/home/pi/Desktop/xxx/xxx.py", line x, in <module>
data = get_data()
File "/home/pi/Desktop/xxx/xxx.py", line, in get_data
parsed = json.loads(data)
File "/usr/lib/python3.5/json/__init__.py", line 319, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.5/json/decoder.py", line 339, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.5/json/decoder.py", line 357, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
I found solution. Thanks
#!/usr/bin/env python
# -*- coding: utf-8 -*-
import time
import datetime
import requests
import json
import I2C_LCD_driver
# from time import *
mylcd = I2C_LCD_driver.lcd()
turkcec = [
[0b01110,
0b10001,
0b10000,
0b10000,
0b10000,
0b10001,
0b01110,
0b00100],
]
while True:
try:
def get_data():
url = "***"
response = requests.get(url)
data = response.text
parsed = json.loads(data)
list = []
for i in range(len(parsed["busList"])):
if parsed["busList"][i]["disabledPerson"] == 0:
list.append(
str(parsed["busList"][i]["displayRouteCode"]) + " " + parsed["busList"][i]["stopDiff"] + "drk " +
parsed["busList"][i]["timeDiff"] + "dk " + "E")
else:
list.append(
str(parsed["busList"][i]["displayRouteCode"]) + " " + parsed["busList"][i]["stopDiff"] + "drk " +
parsed["busList"][i]["timeDiff"] + "dk")
return list
data = get_data()
while True:
starttime = time.time()
while len(data) > 0:
# time.sleep(5)
for x in range(0, len(data), 2):
mylcd.lcd_clear()
print(data[x])
if data[x][0] == "Ç":
mylcd.lcd_load_custom_chars(turkcec)
mylcd.lcd_write(0x80)
mylcd.lcd_write_char(0)
mylcd.lcd_display_string(data[x][1:], 1, 1)
else:
mylcd.lcd_display_string(data[x], 1)
if x == len(data) - 1:
time.sleep(11)
break
if data[x + 1][0] == "Ç":
mylcd.lcd_load_custom_chars(turkcec)
mylcd.lcd_write(0xc0)
mylcd.lcd_write_char(0)
mylcd.lcd_display_string(data[x + 1][1:], 2, 1)
else:
mylcd.lcd_display_string(data[x + 1], 2)
print(data[x + 1])
time.sleep(11)
if (
time.time() - starttime) >= 11.0:
starttime = time.time()
data = get_data()
print("--------")
else:
mylcd.lcd_clear()
while True:
data = get_data()
mylcd.lcd_display_string(time.strftime("%d/%m/%Y"), 1, 3)
mylcd.lcd_display_string(time.strftime("%H:%M:%S"), 2, 4)
time.sleep(1)
if len(data) > 0:
break
continue
except:
if (time.time() - starttime) >= 11.0:
continue
解决方案
推荐阅读
- html - 1024px 容器内的 100vw 图像导致小水平滚动
- javascript - 如果有二维坐标，如何获取一维数组的信息？
- node.js - socket.io 和异步查询有问题
- authentication - 用于日历读取报告的图形 API 访问令牌 无权限
- azure-data-factory - Azure 数据工厂使用 Databricks 中的现有群集
- java - 如何有效地在数组中随机重新插入元素
- date - 将日期压缩为唯一的字母数字字符
- sql - SQL Server 存储过程不返回值
- python - 如何获取单元测试测试名称
- java - 我如何从 Json 对象和数组中获取数据